Catheter for radiation therapy
CA 2417700 A1 · Owner: Ishibashi, Takuya · Inventors: Nakano, Ryoji; Ishibashi, Takuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catheter for radiation therapy comprising: a centering mechanism for irradiating a blood vessel wall with a homogeneous dose; and a perfusion mechanism for perfusing peripheral vessels with blood at all times of centering. The catheter has no roughness on its surface so that it causes neither resistance in moving in the vessel nor a danger of damaging the vessel inner face. In an expandable portion located at the leading end of the catheter, a protrusion is formed in the portion of a specific region at the expanded time by the elasticity difference between two kinds of materials of different elasticities. In the expandable portion there are arranged a low-, elasticity portion and …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 15, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.